A wall-mounted furnace

Abstract

The present invention provides a wall-mounted boiler, wherein the main burner includes a first heating unit and a second heating unit. When heating and domestic hot water are required at the same time, the high-temperature water flowing out of the first heating unit flows into the heat exchanger to heat the cold water flowing into the domestic hot water inlet of the heat exchanger, and the hot water then flows out through the domestic hot water outlet. The low-temperature water generated after heat exchange in the heat exchanger returns to the second heating unit, is further heated in the second heating unit, and the high-temperature water generated after heating by the second heating unit enters the heater through the heating outlet to heat the room. By controlling the solenoid valve on the air outlet, each air outlet can be turned on or off, so that the heating unit or heat exchanger can be quickly heated.

Description

Technical Field

[0001] The invention relates to the technical field of wall-mounted boilers, and in particular to a wall-mounted boiler capable of simultaneously operating in a heating mode and a domestic water use mode. Background Art

[0002] Wall-mounted boilers are essential household appliances in daily life. They have heating and domestic hot water functions. In heating mode, they can heat the room; in domestic hot water mode, they can heat tap water, making it convenient for people to use in the kitchen or bathroom. Most of the existing wall-mounted boilers adopt the principle of domestic hot water priority, that is, when using the hot water function, the heating function must be stopped and heating cannot be performed. When people need both heating and hot water supply at the same time, especially in cold winter, if domestic hot water is used for a long time, the room temperature will drop quickly, thereby reducing the user's comfort. In addition, in the wall-mounted boilers provided by the prior art, the heating mode is relatively single, which easily makes the final water temperature too low or too high, thereby affecting the user experience. Summary of the invention

[0003] To this end, the present invention provides a wall-mounted boiler, comprising: a main heat exchanger, on which a first heating unit and a second heating unit independently arranged are arranged, the first heating unit is provided with a first water inlet and a first water outlet, and the second heating unit is provided with a second water inlet and a second water outlet; a heating unit, on which a heating return water inlet and a heating water outlet are provided, the heating return water inlet is connected to the first heating unit, and the heating water outlet is connected to the second heating unit; a heat exchanger, on which a domestic hot water inlet and a domestic hot water outlet are connected, and the hot water flowing out of the first heating unit enters the heat exchanger and flows back to the second heating unit after the heat exchange is completed in the heat exchanger; a segmented burner, comprising a plurality of burners arranged side by side, and the segmented burner is used to heat the main heat exchanger; an air duct, comprising an air inlet end, and a plurality of air outlet ends arranged in accordance with the plurality of burners, and each of the air outlet ends is respectively provided with a solenoid valve.

[0004] The first water outlet of the first heating unit is provided with a first pipe, the first pipe is provided with a first three-way valve, one end of the first three-way valve is connected to the heat exchanger, and the other end is connected to the second water inlet.

[0005] A second pipe is connected between the second water outlet and the heating water outlet, a second three-way valve is arranged on the second pipe, a third pipe is arranged between the second three-way valve and the heat exchanger, and the third pipe is connected to the first three-way valve.

[0006] A fifth pipe is provided between the heat exchanger and the second water inlet, a third three-way valve is provided on the fifth pipe, and a sixth pipe is connected between the heating water return port and the third three-way valve.

[0007] A fourth pipe is provided between the first water inlet and the heating water return port, and one end of the sixth pipe is connected to the fourth pipe.

[0008] The second tube is provided with a temperature limiter.

[0009] The fourth pipe is provided with a water pump, and along the flow direction of the water flow, the water pump is arranged at the rear end of the connection portion between the fourth pipe and the sixth pipe.

[0010] The domestic hot water outlet is provided with a domestic hot water outlet pipe, and the domestic hot water outlet pipe is provided with a temperature sensing bag.

[0011] The air inlet end is provided with a proportional valve, the burner comprises a first burner and a second burner, and the air outlet end comprises a first air outlet end connected to the first burner, and a second air outlet end connected to the second burner.

[0012] The technical solution of the present invention has the following advantages:

[0013] 1. The wall-mounted boiler provided by the present invention comprises: a main heat exchanger, on which a first heating unit and a second heating unit independently arranged are arranged, the first heating unit is provided with a first water inlet and a first water outlet, and the second heating unit is provided with a second water inlet and a second water outlet; a heating unit, on which a heating return water inlet and a heating water outlet are provided, the heating return water inlet is connected to the first heating unit, and the heating water outlet is connected to the second heating unit; a heat exchanger, on which a domestic hot water inlet and a domestic hot water outlet are connected, and the hot water flowing out of the first heating unit enters the heat exchanger, and flows back to the second heating unit after the heat exchange is completed in the heat exchanger.

[0014] In the present invention, the burner includes a first heating unit and a second heating unit. When heating and preparing domestic hot water are required at the same time, the high-temperature water flowing out of the first heating unit flows into the heat exchanger to heat the cold water flowing into the domestic hot water inlet of the heat exchanger, and the hot water then flows out through the domestic hot water outlet. The low-temperature water generated after heat exchange in the heat exchanger returns to the second heating unit, is further heated in the second heating unit, and the high-temperature water generated after heating by the second heating unit enters the heater through the heating outlet to heat the room.

[0015] The combination of the first heating unit and the second heating unit enables both heating and domestic hot water functions to be performed simultaneously.

[0016] Meanwhile, in the present invention, the air duct comprises an air inlet end and an air outlet end, and a plurality of air outlet ends which are arranged in accordance with the plurality of burners, and each of the air outlet ends is respectively provided with a solenoid valve.

[0017] By controlling the electromagnetic valve on the gas outlet, each gas outlet can be turned on or off. When only one of the gas outlets is turned on, only the burner corresponding to the gas outlet burns, and the heating power to the heat exchanger is relatively small. When multiple or all gas outlets are turned on at the same time, the heating power to the heat exchanger is relatively large, and the heating unit or heat exchanger can be quickly heated up. In the present invention, the water temperature can be controlled by combining the segmented burner with the air duct.

[0018] 2. The wall-mounted boiler provided by the present invention is provided with a proportional valve at the air inlet end. By controlling the proportional valve, the gas flowing into the segmented burner can be accurately controlled, thereby achieving accurate control of the hot water temperature in the heating unit or heat exchanger.

[0019] 3. In the wall-mounted boiler provided by the present invention, the first water outlet of the first heating unit is provided with a first pipe, the first pipe is provided with a first three-way valve, one end of the first three-way valve is connected to the heat exchanger, and the other end is connected to the second water inlet.

[0020] By providing the first pipe and the first three-way valve, the hot water flowing out through the first water outlet can flow directly into the second heating unit through the second water inlet for reheating. The combination of the first pipe and the first three-way valve enables the wall-mounted boiler to realize a separate heating function.

[0021] 4. In the wall-mounted boiler provided by the present invention, a second pipe is connected between the second water outlet and the heating water outlet, a second three-way valve is arranged on the second pipe, a third pipe is arranged between the second three-way valve and the heat exchanger, and the third pipe is connected to the first three-way valve.

[0022] The third pipe is connected to the first three-way valve, so that the water flowing out through the second pipe can flow into the heat exchanger through the third pipe, thereby heating the water in the heater. At this time, the wall-mounted boiler can realize a separate domestic hot water mode; at the same time, the hot water flowing out through the second three-way valve can also flow into the heating outlet. At this time, the wall-mounted boiler can realize a separate heating mode.

[0023] 5. The wall-mounted boiler provided by the present invention controls the water in the domestic hot water system to flow into the heating system in the single domestic hot water mode. Since the domestic hot water itself has a certain temperature, when the domestic hot water flows into the heating system, the heating efficiency of the heating system can be improved. At the same time, the limitation of domestic hot water can be avoided to cause water resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of the main heater provided by the present invention;

[0026] Figure 2 A schematic diagram of the wall-mounted boiler provided by the present invention in a simultaneous heating and domestic hot water mode;

[0027] Figure 3 A schematic diagram of a wall-mounted boiler provided by the present invention in a single heating mode;

[0028] Figure 4 A schematic diagram of the wall-mounted boiler provided by the present invention in a single domestic hot water mode;

[0029] Figure 5 A schematic diagram of the assembly between the segmented burner and the air duct provided by the present invention.

[0030] Description of reference numerals:

[0031] 1-first heating unit; 101-first water inlet; 102-first water outlet; 2-second heating unit; 201-second water inlet; 202-second water outlet; 3-heating return water inlet; 4-heating outlet; 5-heat exchanger; 501-domestic hot water inlet; 502-domestic hot water outlet; 6-first pipe; 7-first three-way valve; 8-second pipe; 9-second three-way valve; 10-third pipe; 11-fourth pipe; 1 2-fifth pipe; 13-third three-way valve; 14-sixth pipe; 15-temperature limiter; 16-water pump; 17-domestic hot water outlet pipe; 18-temperature sensing package; 19-gas inlet; 20-segmented burner; 2001-first burner; 2002-second burner; 21-air bleed pipe; 211-air inlet end; 212-first air outlet end; 213-second air outlet end; 22-solenoid valve; 23-ignition needle; 24-fire detection needle. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] Example 1

[0037] This embodiment provides a wall-mounted boiler, including: a main burner, such as Figure 1 As shown, a first heating unit 1 and a second heating unit 2 are independently arranged thereon, the first heating unit 1 is provided with a first water inlet 101 and a first water outlet 102, and the second heating unit 2 is provided with a second water inlet 201 and a second water outlet 202. Specifically, in this embodiment, the water in the first heating unit 1 and the second heating unit 2 is heated by gas, and the gas flows into the burner through the gas inlet 19.

[0038] The heating unit is provided with a heating water return port 3 and a heating water outlet 4, and a heating pipeline is connected between the heating water return port and the heating water outlet to heat the room.

[0039] In this embodiment, Figure 2 and Figure 5 As shown, it also includes a staged burner 20, including a plurality of burners arranged side by side with each other, and the staged burner is used to heat the main heat exchanger;

[0040] Air duct 21, such as Figure 5As shown, it includes an air inlet end 211, to which is connected a gas inlet 19, to which is connected an external gas source, and a plurality of air outlet ends which are arranged in accordance with the plurality of burners, each of which is provided with a solenoid valve 22. The gas flowing in through the air inlet end 211 is diverted through a plurality of air outlet ends, and then flows into the corresponding burners in sequence. At the same time, by providing a solenoid valve, the on and off of each air outlet end can be controlled, thereby controlling the corresponding burner to burn or extinguish.

[0041] In this embodiment, there are two gas outlets, including a first gas outlet 212 and a second gas outlet 213 , and the gas flowing in through the gas inlet 211 is evenly divided by the first gas outlet 212 and the second gas outlet 213 .

[0042] like Figure 5 As shown, an ignition needle 23 and a fire detection needle 24 are provided inside the combustion chamber. The burner is ignited by the ignition needle 23, and whether the ignition is successful is judged by the fire detection needle 24. The ignition needle and the fire detection needle are structures adopted in the prior art and are not excessively limited in this embodiment.

[0043] In this embodiment, Figure 2-4 As shown in any one of the figures, the heating return water inlet 3 is connected to the first heating unit 1, and the heating water outlet 4 is connected to the second heating unit 2; the heat exchanger 5 is connected with a domestic hot water inlet 501 and a domestic hot water outlet 502. Tap water enters the heat exchanger 5 through the domestic hot water inlet 501, flows out through the domestic hot water outlet 502 after being heated, and then enters the kitchen, bathroom and other places where hot water is needed. In this embodiment, the hot water flowing out of the first heating unit 1 enters the heat exchanger 5, as shown in FIG. Figure 2 As shown, after the heat exchange in the heat exchanger 5 is completed, it flows back to the second heating unit 2 through the fifth pipe 12 .

[0044] In this embodiment, since the burner includes the first heating unit 1 and the second heating unit 2, the preparation of heating water and domestic hot water can be achieved simultaneously through a set of burners.

[0045] In this embodiment, a first pipe 6 is provided at the first water outlet 102 of the first heating unit 1, and a first three-way valve 7 is provided on the first pipe 6. The hot water flowing out through the first pipe 6 can flow into the heat exchanger 5 or into the second water inlet 201 through the first three-way valve 7.

[0046] In this embodiment, a second pipe 8 is connected between the second water outlet 202 and the heating water outlet 4, a second three-way valve 9 is provided on the second pipe 8, a third pipe 10 is provided between the second three-way valve 9 and the heat exchanger 5, and the third pipe 10 is connected to the first three-way valve 7. By providing the second three-way valve 9, the hot water flowing out through the second pipe 8 can flow into the heating water outlet 4, can directly flow into the third pipe 10, and then flow into the inside of the heat exchanger 5.

[0047] In this embodiment, Figure 2-4 As shown in any one of the figures, a fifth pipe 12 is provided between the heat exchanger 5 and the second water inlet 201, and the hot water entering the heat exchanger 5 flows into the fifth pipe 12 after heat exchange, and a third three-way valve 13 is provided on the fifth pipe 12, and a sixth pipe 14 is connected between the heating return water port 3 and the third three-way valve 13. A fourth pipe 11 is provided between the first water inlet 101 and the heating return water port 3, and one end of the sixth pipe 14 is connected to the fourth pipe 11.

[0048] At the same time, a temperature limiter 15 is provided on the second pipe 8. The temperature limiter is provided to prevent the temperature of the hot water heated by the second heating unit from being too high. At the same time, a water pump 16 is provided on the fourth pipe 11. Along the flow direction of the water flow, the water pump 16 is provided at the rear end of the connection between the fourth pipe 11 and the sixth pipe 14. By providing the water pump 16, the water flowing in through the heating return water port can stably flow into the first heating unit.

[0049] In this embodiment, a domestic hot water outlet pipe 17 is provided on the domestic hot water outlet 502, and a temperature sensing package 18 is provided on the domestic hot water outlet pipe 17. By providing the domestic hot water outlet pipe 17, the hot water flowing out of the heat exchanger 5 is discharged to the outside.

[0050] The wall-mounted boiler provided in this embodiment can realize three heating modes:

[0051] The first one is the single heating mode: Figure 3 As shown, Figure 3 The arrows in the middle give the direction of the water flow:

[0052] In the single heating mode, only the heating equipment such as floor heating is heated. First, the burner is controlled to start, and the first heating unit and the second heating unit are heated. The low-temperature water in the heating equipment first enters the fourth pipe through the heating return port. The fourth pipe 11 is connected to the first water inlet 101 of the first heating unit, and the water is first heated inside the first heating unit. After the initial heating is completed, the water flows out through the first water outlet 102 and enters the first three-way valve 7, and then flows into the second water inlet 201 of the second heating unit 2 for secondary heating. After the secondary heating is completed, the water flows out through the second water outlet 202 and enters the second pipe 8. At this time, the second three-way valve 9 is controlled to be directly connected to the heating outlet 4, so that the water heated twice flows into the heating equipment.

[0053] The second type is single domestic hot water mode: Figure 4 As shown, Figure 4 The arrows in the middle give the direction of the water flow:

[0054] In the single domestic hot water mode, water will not enter the heating equipment. The water pump 16 is started, and the circulating water flows out of the heat exchanger 5 and flows into the third three-way valve 13, and then enters the fourth pipe 11 in the direction indicated by the arrow in the figure. The water in the fourth pipe 11 first flows into the first heating unit for preliminary heating, and then flows out from the first water outlet 102 and enters the first three-way valve 7. The water flowing out of the first three-way valve 7 flows into the second water inlet 201 of the second heating unit 2 again, and is heated again inside the second heating unit 2. The water after heating again flows out through the second water outlet 202 and enters the second pipe 8. The water flows to the second three-way valve 9, and then flows into the third pipe 10 under the diversion of the second three-way valve 9, and flows back to the inside of the heat exchanger 5 through the third pipe 10.

[0055] The heat exchanger 5 is connected with a domestic hot water inlet 501 and a domestic hot water outlet 502. The water heated by the first heating unit and the second heating unit exchanges heat with the domestic hot water inside the heat exchanger 5, thereby ensuring the water temperature of the domestic hot water.

[0056] The third type is the simultaneous heating and domestic hot water mode. Figure 2 As shown, Figure 4 The arrows in the middle give the direction of the water flow:

[0057] Start the water pump 16, and the heating water inside the heating equipment flows into the fourth pipe 11 through the heating return water port 3, and then enters the first heating unit through the first water inlet 101 for heating. The water heated by the first heating unit 1 flows in through the first water outlet 102, and then flows into the first three-way valve 7. By controlling the first three-way valve 7, the water flowing out through the first three-way valve 7 flows into the third pipe 10, and the water flowing out through the third pipe 10 flows into the heat exchanger 5 for heat exchange. The heat exchanger 5 is connected with a domestic hot water inlet 501 and a domestic hot water outlet 502. The hot water flowing out of the first heating unit heats the water flowing into the heat exchanger 5 through the domestic hot water inlet 501, thereby realizing the preparation of domestic hot water.

[0058] At the same time, the water flowing out through the heat exchanger 5 flows into the third three-way valve 13, and then flows into the second heating unit 2 through the second water inlet 201 for reheating. The reheated water flows out through the second water outlet 202 and flows into the second pipe 8. After the water flows to the second three-way valve 9, the third three-way valve 9 is controlled so that the water flows directly to the heating outlet, thereby realizing the preparation of heating water.

[0059] In this embodiment, domestic hot water and heating water can be prepared simultaneously by controlling the first three-way valve, the second three-way valve, the third three-way valve, the first heating unit and the second heating unit.

[0060] Specifically, the first three-way valve, the second three-way valve and the third three-way valve are all solenoid valves, and the control of different flow directions of the three-way valves can be achieved through simple control logic. In this embodiment, too many restrictions are imposed on the three-way valves.

[0061] At the same time, through the wall-mounted boiler provided in this embodiment, the combustion power can also be controlled in the separate heating mode and the separate domestic hot water mode, as follows:

[0062] In the single heating mode, when the indoor temperature needs to be quickly raised, the solenoid valves 22 on the first combustion chamber 2001 and the second combustion chamber 2002 are controlled to open, and then the gas is ignited through the ignition needle 23. When the indoor temperature needs to be lowered, the solenoid valve 22 on the first combustion chamber 2001 or the second combustion chamber 2002 is opened, and only one combustion chamber is kept working.

[0063] In the single domestic hot water mode, when the user needs to get hot water quickly, the solenoid valve 22 on the first combustion chamber 2001 and the second combustion chamber 2002 is controlled to open, and then the gas is ignited through the ignition needle 23. When the user needs to cool the hot water, the solenoid valve 22 on the first combustion chamber 2001 or the second combustion chamber 2002 is controlled to open, and only one combustion chamber is kept working, which can also save energy.

[0064] By the same token, in the simultaneous heating and domestic hot water mode, the heating rate of the hot water can be adjusted by controlling the opening or closing of the first combustion chamber and the second combustion chamber.

[0065] As a variation, in this embodiment, not only two combustion chambers can be used, but also multiple different combustion chambers. In this case, each combustion chamber is provided with a solenoid valve, and the controller can control the number of combustion chambers in operation according to the temperature value input by the user, thereby precisely controlling the temperature.

[0066] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A wall-mounted boiler, characterized in that: include: A main heat exchanger, on which a first heating unit (1) and a second heating unit (2) which are independently arranged are arranged, the first heating unit (1) being provided with a first water inlet (101) and a first water outlet (102), and the second heating unit (2) being provided with a second water inlet (201) and a second water outlet (202); A heating unit, on which a heating water return port (3) and a heating water outlet (4) are provided, wherein the heating water return port is connected to the first heating unit (1), and the heating water outlet (4) is connected to the second heating unit (2); A heat exchanger (5) having a domestic hot water inlet (501) and a domestic hot water outlet (502) connected thereto, wherein the hot water flowing out of the first heating unit (1) enters the heat exchanger (5) and flows back to the second heating unit (2) after completing heat exchange in the heat exchanger (5); A segmented burner (20), comprising a plurality of burners arranged side by side with each other, wherein the segmented burner (20) is used to heat the main heat exchanger; An air bleed pipe (21) comprising an air inlet end (211) and a plurality of air outlet ends arranged in a consistent manner with the plurality of burners, each of the air outlet ends being provided with a solenoid valve (22); The first water outlet (102) of the first heating unit (1) is provided with a first pipe (6), the first pipe (6) is provided with a first three-way valve (7), one end of the first three-way valve (7) is connected to the heat exchanger (5), and the other end is connected to the second water inlet (201); A second pipe (8) is connected between the second water outlet (202) and the heating water outlet (4), a second three-way valve (9) is provided on the second pipe (8), a third pipe (10) is provided between the second three-way valve (9) and the heat exchanger (5), and the third pipe (10) is connected to the first three-way valve (7); A fifth pipe (12) is provided between the heat exchanger (5) and the second water inlet (201), a third three-way valve (13) is provided on the fifth pipe (12), and a sixth pipe (14) is connected between the heating water return port (3) and the third three-way valve (13).

2. The wall-mounted boiler according to claim 1, characterized in that: A fourth pipe (11) is provided between the first water inlet (101) and the heating water return port (3), and one end of the sixth pipe (14) is connected to the fourth pipe (11).

3. The wall-mounted boiler according to claim 2, characterized in that: The second tube (8) is provided with a temperature limiter (15).

4. The wall-mounted boiler according to claim 3, characterized in that: A water pump (16) is provided on the fourth pipe (11); along the flow direction of the water flow, the water pump (16) is provided at the rear end of the connection portion between the fourth pipe (11) and the sixth pipe (14).

5. The wall-mounted boiler according to claim 4, characterized in that: The domestic hot water outlet (502) is provided with a domestic hot water outlet pipe (17), and the domestic hot water outlet pipe (17) is provided with a temperature sensing package (18).

6. The wall-mounted boiler according to claim 1, characterized in that: The air inlet end is provided with a proportional valve.

7. The wall-mounted boiler according to claim 1, characterized in that: The burner comprises a first burner (2001) and a second burner (2002), and the gas outlet end comprises a first gas outlet end (212) connected to the first burner, and a second gas outlet end (213) connected to the second burner.

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